______ it rain tomorrow, we would have to put off the sports meeting.
| A．Were | B．Should | C．Would | D．Could |
Six ___ are eating grass at the foot of the hill.
| A．sheeps | B．sheep | C．sheepes | D．shoop |
Do you brush ___ every day?
| A．your tooth | B．your tooths | C．your teeth | D．teeth |
That farmer has many ____ on the farm.
| A．geeses | B．gooses | C．goose | D．geese |
Deng Xiao Ping’s works ___ publihed.
| A．has been | B．have been | C．was | D．is |
This chemical works _____.
| A．is rebuilding | B．is being rebuilt | C．are being rebuilt | D．is being rebuilt |